MC33560 데이터 시트보기 (PDF) - ON Semiconductor

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MC33560

Power Management and Interface IC for Smartcard Readers and Couplers

ON Semiconductor 

MC33560

Table 1. PIN FUNCTION DESCRIPTION

Pin Symbol

Type

Name/Function

CARD INTERFACE

19 CRDC8

I/O

General purpose input/output. It has the same behavior as CRDIO. It can be connected to the

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CURRENT LIMIT AND THERMAL PROTECTION

1 PGND

POWER

This pin is the return path for the current flowing into Pin 22 (L1). It must be connected to

CRDGND using appropriate grounding techniques.

12 CRDGND POWER

This pin is the signal ground. It must be connected to the ground pin of the card connector. It is

the reference level for all analog and digital signals.

13 CRDVCC

POWER

This pin connects to the VCC pin of the card connector. It is the reference level for a logic “1” of

Pins 11, 14, 15, 16 and 19.

22 L1

POWER

This pin connects to an external inductance for the DC−DC converter. Please refer to the

description of the DC−DC converter functional block.

23 VBAT

POWER

This pin is connected to the supply voltage. Logic level “1” of Pins 2 to 10, 17, 18, 20 and 21 is

referenced to VBAT. Operation of the MC33560 is inhibited when VBAT is lower than the

minimum value.

24 ILIM

POWER

This pin can be connected to the PGND pin, or to a resistor connected to PGND, or left open,

depending on the peak coil current needed to supply the card.

PROGRAMMING AND STATUS FUNCTIONS

The MC33560 features a programming interface and a status interface. Figure 20 shows how to enter and exit programming

mode; Table 2 shows which pins are used to access the various functions.

RDYMOD (in)

CS

PWRON

PROGRAM DATA VALUE

RESET

PROGRAM DATA VALUE

IO

PROGRAM DATA VALUE

ENTER

PROGRAMMING

MODE

LATCH

EXIT

PROGRAM PROGRAMMING

VALUE

MODE

Figure 20. MC33560 Programming Sequence

Table 2. PIN USE FOR PROGRAMMING AND STATUS FUNCTIONS

Programs CRDV-

CC

TO 3 V/5 V

Select VCC

ON/OFF

Select

Clock Input

Program ASYCLKIN

Divide Ratio

RDYMOD

(In/Out)

Force to 0

READ

Force to 0

Force to 0

CS (In)

rising edge

0

rising edge

rising edge

PWRON

RESET(In)

0/1

Programs CLK

Input/Divide Ratio

0/1

NOT USED

Programs CRDVCC

0/1

Programs CRDVCC

0/1

I/O(In)

Programs CLK

NOT USED

0/1

0/1

Input/Divide Ratio

Poll Card

Status

READ

0

0 or Hi−z

NOT USED

NOT USED

Poll CRDVCC

Status

READ

0

1

NOT USED

NOT USED

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